Induction regulator



Jain. 24, 1928.

P. SUTER INDUCTION REGULATOR Filed Jan.25, 1926 Patented Jan. 24, 1928.

UNITED STATES PATENT QFFEQE.

PHILIP? SUTER, OF BADEN, SWITZERLAND, A SIGNOE TO AKTIENGESELLSCHAFT BROWN BOVERI 66 CIE, OF BADEN, SWITZERLAND, A JOINT-STOCK COMPANY OF SWITZERLAND.

INDUCTION REGULATOR.

Application filed January 25, 1826, Serial No. 83,500, and'in Germany January 30, 1925.

This invention relates to potential regulators of the type designed for relative rotary adjustment of the inductive elements, and it has particular application to polyphase regulators of this type.

The general purpose of the invention is the provision of an improved construction which will contribute materially to the efficiency of the device by enabling a most effective association of the inductive elements.

Another purpose of the invention is the provision of a construction adapted to maintain the accuracy and operability of the device particularly in respect to its adjustability.

A specific object of the invention is the provision of a construction designed to prevent distortion and maladjustment of the parts by the magnetic influences to which they are subjected.

Other and further objects of the invention will he pointed out hereinafter, indicated in the appended claims, or obvious to one skilled in the art upon an understanding of the present disclosures.

For reasons of economy it is advantageous to make the iron cores of induction regulators as long as possible. Limitations are imposed in this direction, however, by the fact that the shaft of the rotary element is subjected to unbalanced magnetic stresses, which may have the effect of bending the shaft out of alignment. 'The use of an ex cessivcly thick shaft is likely to affect the efficiency of the device, and it is not feasible to shorten the distance between the shaft bearings, as it is necessary that the connections of the windings be accommodated between them.

The present invention contemplates the provision of an auxiliary support for the rotary member between the shaft bearings and within the span of the effective iron of the associa :ed inductive elements, the effect of the same being to afford the shaft proper support to maintain it in the desired accurate alignment, while preserving the other features of construction which contribute to the efficicncy of the apparatus, both from the stand-point of manufacture and the stand-point of performance.

In the accompanying drawing forming a part of this specification, I illustrate diagrammatically one fashion in which the invention may be structurally embodied. It is to be understood, however, that this is pre sented for the purpose of illustration only, and that the actual construction may take various forms. varying in part from that illustrated, without departing from the scope of the invention defined in the appended claims.

In the drawing Fig. 1 is a longitudinal sectional view of w an induction regulator construction illustrating the association of the inductive elements, the various end connections being omitted. and V Fig. 2 is a detail in the nature of a part transverse sectional view taken on approximately 22 of Fig. 1.

The nature of the invention may be most quickly understood by reference to this illustrative form.

Let it be understood that the reference numeral 1 designates generally a frame portion of the machine on which are supported the magnetic stator elements 4. Extending: longitudinally of the frame and guided therein in bearing-s 3 is the shaft 2 upon which are carried the rotor elements 6. These stator and rotor elements are channelled for conductor elements 5 and 7. The magnetic elements, both stator and rot-or, are interrupted at some appropriate interval between the shaft bearings, and in this situation are inserted the guiding supports 8 and 9, the former abutting; the separated magnetic elements of the stator and having; support on the frame 1, and the latter abut ting the separated elements of the rotor and having support on the shaft. for rotation therewith. The guiding supports 8 and 9 have peripheral surface contact concentric with shaft 2, thereby affording it guide support between the bearings effective to hold it in proper alignment. One or the other of the guiding: supports 8 and 9 may he made of any suitable metal such as bronze, or the contacting surfaces may be formed of material such as l'icst to qualify them for their un-pose, and their line of contact or hearinglies in the air gap between the stat-or and rotor elements. For accommodation of the conductors 5 and 7, these bearing elements are slotted transversely in alignment with the slots of the magnetic elements with which they are laterally associated, and in order to afford smooth bearing surfaces it is preferable that the slots of one or both 'being interrupted longitudinally terminate short of the bearing surface, for at least a part of the width of the supports. It is obvious that a plurality of such guiding supports may be inserted at suitable intervals in the length of the inductive elements. The construction may be employed to advantage in regulators of either Vertical or horizontal type, and is particularly suited to those which are oil cooled.

I'Vhat I claim is v1. In an induction regulator, the combination with the shaft and the frame, of magnetic, elements mounted on the shaft and frame respectively, said magnetic elements of the shaft, guiding supports in the intervals between the magnetic elements, one of said guiding supports being supported on the frame and another on the shaft, and Com ductors extending longitudinally of the shaft through the magnetic elements and the guiding supports.

2. An induction regulator comprising, in combination, a frame, a shaft rotatable rela- .tive to the frame magnetic elements 511)- 7 \4 ported on the frame, magnetic elements carriedrby the shaft-in inductive association with those on the frame, a guiding support interposed between magnetic elements'on the frame, a co-operating guiding support carried by the shaft for hearing engagement with. the first-mentioned guiding support, and conducting elements extending through the magnetic elements and guiding supports;

3. In an induction regulator, in combination, a. shaft, hearings in which the shaft rotates, a frame extending between the bearings, magnetic elements carried on the shaft and spaced apart, magnetic elements supported on the frame and spaced apart, guid 'ing' supports between the magnetic elements on the shaftand frame respectively, said guiding supports having bearing co-operation concentric with the shaft, and conductors extending through the magnetic elements and guiding supports on the frame and shaft respectively.

4. In an induction regulator, in combination, a frame, a shaft, spaced bearings for 1 the shaft, inductively associated magnetic elements carried on the frame and shaft re spectively and guiding-supports forsustaming the shaft intermediate its bearings. \l

shaft against flexion intermediate the bearings, said guiding supports having retentive cooperation with said conductors.

6. In an induction regulator, in combination, a frame, a shaft, inductive element-s supported on the frame and shaft respectivciy, bearings for the shaft at the ends of the inductive elements and guiding supports for the shaft between the bearings, said guiding supports having bearing contact in the line of the air gap between the inductive elements on the frame and shaft.

7. In an induction regulator, in combination, a frame, a rotary shaft, a magnetic element supported on the frame, an inductively associated magnetic element supported on the shaft, conductors for energizing the respective magnetic elements, bearings for the shaft. and guiding supports for the shaft inserted in the magnetic elements between the bearings.

8. In an induction regulator, in combination, a frame, a shaft, spaced bearings for the shaft, inductively associated magnetic elements carried on the shaft, a guiding member carried on the shaft between magnetic elements and having lateralsuppore ing cooperation therewith, and a bearing member. carried by the frame and having peripheral bearing cooperation with the guiding member to support the shaft against fiection between its bearings, I

9. In an induction regulator, in combination, a frame. a shaft having spaced hearing support thereon, conductors carried on the shaft and frame in inductive association, a guiding member carried on the shaft between the bearings and having supporting cooperation with conductors on the shaft, and a bearing member supported on the frame andhaving bearing engagement with the guiding member to support the shaft against flection betweenthe bearings.

10. In an induction regulator, in combination, a frame, a shaft supported in the frame, spaced bearings for the shaft, 1nductively associated elements supported on the shaft and frame respectively between the bearings, a guiding support on theshaft between the hearings, and ajbearing member having bearing cooperation with said guiding member to sustain the shaft against flection intermediate the bearings, the bearing contact of said bearing member and guiding member being disposed within the area of the clearance between the inductive elements on the shaft and those on the frame.

In testimony whereof I have hereunto subscribed my name at Zurich, Switzerland on the 11th day of January, A. D.- 1926.

PHILIPP SUTE 

